There have been 50 recent insider transactions recorded for Mistras Group, Inc. (MG), including 25 buys and 17 sells. Total insider buying was valued at $518.62K and total insider selling at $403.61K.
Notable insiders with recent activity include Coggins Eileen Mary, Hammad Hanei Wail, Prajzner Edward J. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — MG
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-09-15 |
Coggins Eileen Mary |
EVP & Chief Legal Officer |
Unknown |
25,000 |
$9.55 |
$238.75K |
- |
| 2026-03-26 |
Hammad Hanei Wail |
EVP & Chief Operating Officer |
Tax Withholding of RSU |
2,865 |
$15.10 |
$43.26K |
61,777 |
| 2026-03-22 |
Prajzner Edward J |
Sr. EVP and CFO |
Tax Withholding of RSU |
1,367 |
$14.05 |
$19.21K |
148,076 |
| 2026-03-16 |
Prajzner Edward J |
Sr. EVP and CFO |
Tax Withholding of RSU |
2,239 |
$14.61 |
$32.71K |
149,443 |
| 2026-03-07 |
Prajzner Edward J |
Sr. EVP and CFO |
Tax Withholding of RSU |
2,540 |
$14.82 |
$37.64K |
151,682 |
| 2026-03-04 |
Prajzner Edward J |
Sr. EVP and CFO |
Tax Withholding of RSU |
698 |
$15.68 |
$10.94K |
154,222 |
| 2026-03-04 |
D'alterio Gennaro A. |
EVP, Chief Commercial Officer |
Tax Withholding of RSU |
184 |
$15.68 |
$2.89K |
47,239 |
| 2026-03-04 |
Stamatakis Manuel N. |
Executive Chairman |
Tax Withholding of RSU |
814 |
$15.68 |
$12.76K |
509,795 |
| 2026-03-04 |
Hammad Hanei Wail |
EVP & Chief Operating Officer |
Tax Withholding of RSU |
337 |
$15.68 |
$5.28K |
64,642 |
| 2026-02-28 |
D'alterio Gennaro A. |
EVP, Chief Commercial Officer |
Tax Withholding of RSU |
862 |
$15.28 |
$13.17K |
47,423 |
| 2026-02-28 |
Prajzner Edward J |
Sr. EVP and CFO |
Tax Withholding of RSU |
1,303 |
$15.28 |
$19.91K |
154,920 |
| 2026-02-25 |
D'alterio Gennaro A. |
EVP, Chief Commercial Officer |
RSU Award |
19,905 |
- |
- |
48,940 |
| 2026-02-25 |
Hammad Hanei Wail |
EVP & Chief Operating Officer |
RSU Award |
29,762 |
- |
- |
88,357 |
| 2026-02-25 |
Coggins Eileen Mary |
EVP, General Counsel |
RSU Award |
7,242 |
- |
- |
22,242 |
| 2026-02-25 |
Prajzner Edward J |
Sr. EVP and CFO |
RSU Award |
37,202 |
- |
- |
156,223 |
| 2026-02-25 |
Stamatakis Manuel N. |
Executive Chairman |
RSU Award |
86,310 |
- |
- |
510,609 |
| 2026-02-25 |
Shuman-fabbri Natalia |
President and CEO |
RSU Award |
101,190 |
- |
- |
126,190 |
| 2026-01-05 |
Prajzner Edward J |
Sr. EVP and CFO |
Tax Withholding of RSU |
2,699 |
$12.65 |
$34.14K |
119,021 |
| 2026-01-02 |
Stamatakis Manuel N. |
Executive Chairman |
RSU Award |
40,000 |
- |
- |
424,299 |
| 2025-12-31 |
Vahaviolos Aspasia Felice |
10 Percent Owner |
Gift (Given) |
5,251,358 |
- |
- |
854,292 |
| 2025-12-31 |
2025 Irrevocable Two-year Grantor Retained Annuity Trust Of Aspasia F. Vahaviolos |
10 Percent Owner |
Unknown |
- |
- |
- |
5,251,358 |
| 2025-12-04 |
Pizzi Charles P |
Director |
Gift (Given) |
2,150 |
- |
- |
66,618 |
| 2025-09-24 |
D'alterio Gennaro A. |
EVP, Chief Commercial Officer |
Tax Withholding of RSU |
475 |
$9.53 |
$4.53K |
29,035 |
| 2025-09-15 |
Coggins Eileen Mary |
EVP & Chief Legal Officer |
Unknown |
- |
- |
- |
15,000 |
| 2025-09-15 |
Coggins Eileen Mary |
EVP & Chief Legal Officer |
Informative Buy |
15,000 |
$9.55 |
$143.25K |
15,000 |
| 2025-09-15 |
Coggins Eileen Mary |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-09-15 |
Coggins Eileen Mary |
EVP & Chief Legal Officer |
RSU Award |
15,000 |
- |
- |
15,000 |
| 2025-09-08 |
Shuman-fabbri Natalia |
President and CEO |
RSU Award |
25,000 |
- |
- |
25,000 |
| 2025-07-02 |
Sotirios Vahaviolos January 2023 2-year Grantor Retained Annuity Trust |
10 Percent Owner |
Gift (Given) |
4,685,578 |
- |
- |
- |
| 2025-07-02 |
Vahaviolos Aspasia Felice |
10 Percent Owner |
Inheritance (Buy) |
2,217,087 |
- |
- |
6,105,650 |
| 2025-06-05 |
Stamatakis Manuel N. |
Executive Chairman |
Informative Buy |
10,000 |
$7.71 |
$77.1K |
384,299 |
| 2025-05-23 |
Vahaviolos Aspasia Felice |
10 Percent Owner |
Unknown |
- |
- |
- |
3,888,563 |
| 2025-05-19 |
Glanton Richard H |
Director |
RSU Award |
14,447 |
- |
- |
61,569 |
| 2025-05-19 |
Forese James J |
Director |
RSU Award |
14,447 |
- |
- |
170,181 |
| 2025-05-19 |
Pizzi Charles P |
Director |
RSU Award |
14,447 |
- |
- |
68,768 |
| 2025-05-19 |
Debenedictis Nicholas |
Director |
RSU Award |
14,447 |
- |
- |
241,958 |
| 2025-05-19 |
Lohmeier Michelle |
Director |
RSU Award |
14,447 |
- |
- |
92,361 |
| 2025-03-25 |
Hammad Hanei Wail |
EVP & Chief Operating Officer |
Return of Shares |
6,384 |
$10.79 |
$68.88K |
58,595 |
| 2025-03-25 |
Hammad Hanei Wail |
EVP & Chief Operating Officer |
Tax Withholding of RSU |
6,384 |
$10.79 |
$68.88K |
58,595 |
| 2025-03-20 |
Debenedictis Nicholas |
Director |
Informative Buy |
1,038 |
$10.01 |
$10.39K |
227,511 |
| 2025-03-19 |
Debenedictis Nicholas |
Director |
Informative Buy |
8,962 |
$10.04 |
$89.98K |
226,473 |
| 2025-03-19 |
Prajzner Edward J |
Sr. EVP and CFO |
Tax Withholding of RSU |
1,303 |
$9.84 |
$12.82K |
121,720 |
| 2025-03-19 |
Keefe Michael C |
EVP, General Counsel |
Tax Withholding of RSU |
1,029 |
$9.84 |
$10.13K |
91,558 |
| 2025-03-19 |
D'alterio Gennaro A. |
EVP, Chief Commercial Officer |
Tax Withholding of RSU |
655 |
$9.84 |
$6.45K |
29,510 |
| 2025-03-19 |
Stamatakis Manuel N. |
Executive Chairman |
Informative Buy |
10,000 |
$9.95 |
$99.5K |
374,299 |
| 2025-03-18 |
Debenedictis Nicholas |
Director |
Informative Buy |
10,000 |
$9.84 |
$98.4K |
217,511 |
| 2025-03-05 |
Prajzner Edward J |
Sr. EVP and CFO |
RSU Award |
22,689 |
- |
- |
120,538 |
| 2025-03-05 |
Keefe Michael C |
EVP, General Counsel |
RSU Award |
10,455 |
- |
- |
91,749 |
| 2025-03-05 |
D'alterio Gennaro A. |
EVP, Chief Commercial Officer |
RSU Award |
11,036 |
- |
- |
28,465 |
| 2025-03-05 |
Stamatakis Manuel N. |
Executive Chairman |
RSU Award |
5,700 |
- |
- |
364,299 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
